Chaeles ball



(No Model.)

' 0. BALL.-

ROTARY GUTTING MAGHINE'FOR REDUCING"VARIOUS MATTERS T0 FRAGMENTS. No.549,264. Patented Nov. 5,1895. I

ANDREW B.GRAHAM. PNOTDUTHQWASIII NGTUKEC,

- UNITED STATES PATENT OFFICE.

CHARLES BALL, OF BROOKLYN, NEW YORK, ASSIGN OR TO BALL &

JEVvELL, OF SAME PLACE.

ROTARY CUTTING-MACHINE FOR REDUCING VARIOUS MATTERS TO FRAGMENTS.

SPECIFICATION forming part of Letters Patent No. 549,264, dated November5, 1895. Application filed May 16, 1894-.- Serial No. 511, l1'7. (Nomodel.)

To aZZ whom it may concern.-

Be it known that 1, CHARLES BALL, of the city of Brooklyn, in the countyof Kings and State of New York, have invented a new and usefulImprovement in Rotary Cutting-Machines for Reducing Various Matters toFragments, of which the following is a specification.

My improvement relates to machines in which a series of cutters carriedby a rotating shaft revolve within a stationary easing, into which thereproject fixed cutters, with which the first mentioned cutters co-operatewith a shear-like action, such machines be ing applicable to thereduction into fine fragments of various matterssuch, for example, asmedicinal roots or cork scraps.

Figure 1 in the accompanying drawings represents a vertical sectionalview, taken parallel with the cutter-shaft of a machine embodying myinvention, the stationary parts of the machine being shown in sectionand the rotary shaft and its cutter-heads and cutters being shownentire. Fig. 2 represents a transverse vertical section at right anglesto Fig. 1 in the line 2 2 of that figure. Fig. 3 represents averticalsection taken in the line 3 of Fig. 2. Fig. 4 is a perspective view ofone of the bolts which is used for clamping and securing the stationarycutters.

Similar letters of reference designate correspondingparts in all thefigures.

A A B B O designate the stationary casing of the machine. This casing isof approximately cylindrical form and is represented as consisting oftwo heads A A A A, two internally concave side plates B B, in sertedbetween the said heads and constituting the sides and upper parts of thecylindrical contour of the casing, and a screen O, which constitutes thelower part and bottom of the said casing between the two concave platesB B.

E is the rotary cutter-shaft running through the center of the casingand having its bearings in the two heads A A A A thereof, the said headsfor that purpose being each divided horizontally into two parts, betweenwhich are formed the bearings for the shaft. The lower parts A A of thesaid heads are supported on and fastened to upright standof theirrespective grooves.

ards F F, and the upper parts A A are fastened to the lower parts A.There is an opening at a abetween the two concave side plates B B, andto this opening is fitted a hopper G. In each of the said concave sideplates B B there is a seriesof radial or approximately having theiredges parallel with the shaft.

The bevel of the said cutters, by which their sharp edges are produced,is on the sides presented in the opposite direction to that in which thecutters revolve, which direction is indicated by the arrow on one of thecutterheads in Fig. 2. The bevel of the stationary cutters is thereverse of that of the rotary cutters-that is to say, it is on the sidesopposite to those toward which the rotary cutters move.

The cutters I), though stationary when in operation, are adjustableinward or outward relatively to the casing to bring their edges inproper relation to the edges of the rotary cuttersby means ofadjusting-screws e, (see Figs. 2 and 3,) of which there may be anysuitable number for each cutter arranged directly behind it and screwingthrough their respective concave side plates at the backs By screwing upthese screws the cutters are adjusted into their proper relation to therotary cutters. The said cutters b when thus adjusted are secured bytaper-headed clamping-bolts I, of which one is shown separately in theperspeetive View, Fig. 4, and the taper-heads of the said bolts, workingin recesses provided in the concave plates B B on one side of eachcutter-groove, are made to act as wedges to clamp the cutters againstthe opposite side .of the groove by screwing up the nuts 1', provided onthe screwed ends of the said bolts,

which project outwardly from the plates B B.

The screen 0 is of such concave form internally that the cutters 0 willnearly touch it at the bottom, but will work farther away from it atother parts, as may be understood by reference to Fig. 2. The meshes,perforations, or interstices may be varied according to the fineness towhich it is desired to reduce the material to be out, and in order toprovide for changing the screen it is attached to bars f, Figs. 1 and 2,which are hooked at one end to a bar {1 running across the machinebetween the heads A A, the other ends of the said bars having pivoted tothem screwbolts h, Fig. 2, which pass through lugsj on one of the plates13 B, and are secured by nuts 72/ outside of the said lugs j.

The cutters as they pass the screen hav the effect of turning over thecut-up mate rial and to force the finer portions thereof through it andto turn over the coarser portions in such way as to present them anew tothe action of the cutters.

In order to afford access to the cutter-heads II and cutters b and c andtoprovide for the taking out of any or all of the cutters for grindingand replacing them after grinding, the concave side plates B B, whichcontain the stationary cutters, are pivoted at their bottoms to the twohead-plates A A by means of pivot-boltsm, and are secured at their upper ends'to the head-plates A A by removable screw-bolts n. Bytaking outthese latter bolts n the concave plates are left free to be swung asideseparately in opposite directions from the stationary hopper, so thataccess can be readily had to all the cutters in either or each of saidconcave plates and to those on the rotary cutter-heads.

hat I claim as my invention is- The combination of a central rotaryshaft and attached cutters, a casing inclosing said shaft and cuttersand comprising two stationary heads and two concave side plates and aconcavescreen between the lower parts of the said side plates,adjustable cutters in said side plates, and a hopper between the saidside plates, the said side plates being separately pivoted at theirlower parts to the said heads on opposite sides of said screen andcapable of being swung outward in opposite directions from the hopper togive access to the cutters, substantially as herein described.

CHARLES BALL.

Vitnesses FREDK. HAYNES, L. M. EGBERT.

